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[求助]
求翻译一段，英翻中，和消泡剂有关，翻译好的追分
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If a thin oil layer covers the air–water surface and many small, hydrophobic solid particles are present at the surfaces of the antifoam oil drops and are able to enter the air–water surface, they showed that capillary effects cause the oil layer at the surface to form an oil collar around the portion of the particle projecting outward from the drop (Fig. 2). If the equilibrium contact angle αSO between the oil–water interface and the solid surface (measured through the water) exceeds 90°, inspection of Fig. 2 reveals that as oil is drawn into the collar, the contact line at the bottom of the collar advances until it meets the contact line where the solid emerges from the oil drop. At this point the collar coalesces with the drop, allowing the drop to enter the air–water surface. On the other hand, if there is no oil layer on the air–water surface, the criterion for oil to enter the surface following entry by a solid particle is more restrictive [1]: A+B>180° with A the equilibrium contact angle (measured through the water) where an air–water interface meets the solid. Thus, when solid particles are present at the oil–water interface, an oil drop can enter the air–water surface in some cases in the presence of but not in the absence of an oil layer on the surface. [ Last edited by lsyfdcg on 2012-3-5 at 14:40 ] |
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magice1986
木虫 (小有名气)
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【答案】应助回帖
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Mally89(金币+1): 感谢应助！~欢迎常来！~吼吼！~\(^o^)/~ 2012-03-05 19:11:10
lsyfdcg(金币+20, 翻译EPI+1): ★★★很有帮助 谢谢了啊~~~ 2012-03-08 10:44:10
Mally89(金币+1): 感谢应助！~欢迎常来！~吼吼！~\(^o^)/~ 2012-03-05 19:11:10
lsyfdcg(金币+20, 翻译EPI+1): ★★★很有帮助 谢谢了啊~~~ 2012-03-08 10:44:10
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如果薄油层覆盖在空气与水接触的表面，许多小的疏水固体颗粒就会出现在消泡剂的油滴表面，从而作用于空气与水的接触面，有人发现毛细管效应可以使表面油层在部分粒子周围形成从液滴向外投射的油圈（图2）。如果油与水接触面与固相表面（测量水所得）平衡接触角αSO超过90度，从图2可知，一旦油滴变成油圈，在油圈底部的接触线就会向前移动，直到它到达从油滴出现固相的接触线为止，在这一点上，油圈可以与油滴合并在一起，从而使油滴进入空气与水的接触面。另外一方面，如果在空气与水的接触面上没有油层，对于油滴进入表面再进入固体颗粒的标准是更加严格的【1】：A+B>180°。A为空气-水接触面与固体(相）接触的平衡接触角（测量水所得）因此，当固体颗粒出现在油-水接触面时，在某些情况下，油滴是可以进入空气与水接触面的，在...存在下，在表面就不会出现油层。 PS：最后一句语法不对，可能是漏词了。只能这么翻译了。 下回能给出图来，就更好理解了。 |
2楼2012-03-05 16:47:18
